JPS5414079A - Trouble detector for light-ray type safety device - Google Patents
Trouble detector for light-ray type safety deviceInfo
- Publication number
- JPS5414079A JPS5414079A JP8021277A JP8021277A JPS5414079A JP S5414079 A JPS5414079 A JP S5414079A JP 8021277 A JP8021277 A JP 8021277A JP 8021277 A JP8021277 A JP 8021277A JP S5414079 A JPS5414079 A JP S5414079A
- Authority
- JP
- Japan
- Prior art keywords
- safety device
- light
- type safety
- ray type
- trouble detector
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Electronic Switches (AREA)
Abstract
PURPOSE: To ensure the operation of a safety device and improve safety, by detecting abnormalities of light emitting elements, light receiving elements and peripheral circuits thereof in the safety device.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52080212A JPS5829440B2 (en) | 1977-07-04 | 1977-07-04 | Failure detection device for optical safety equipment |
DE19782827863 DE2827863A1 (en) | 1977-07-04 | 1978-06-24 | Optical safety system for press - has sub-system to periodically produce artificial fault condition by interrupting optical couplings using relay to actuate counter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP52080212A JPS5829440B2 (en) | 1977-07-04 | 1977-07-04 | Failure detection device for optical safety equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5414079A true JPS5414079A (en) | 1979-02-01 |
JPS5829440B2 JPS5829440B2 (en) | 1983-06-22 |
Family
ID=13712070
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP52080212A Expired JPS5829440B2 (en) | 1977-07-04 | 1977-07-04 | Failure detection device for optical safety equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5829440B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56501293A (en) * | 1979-09-10 | 1981-09-10 | ||
JPS5961226A (en) * | 1982-09-30 | 1984-04-07 | Anritsu Corp | Device for discriminating fault of optical switch |
JPS6068725U (en) * | 1983-10-18 | 1985-05-15 | 株式会社山武 | photoelectric switch |
JPS6431294U (en) * | 1987-08-19 | 1989-02-27 | ||
JPS6464902A (en) * | 1987-09-03 | 1989-03-10 | Riken Optical Kk | Optical malfunction detecting circuit and system check device therefor in garbage collection vehicle |
US5268635A (en) * | 1992-07-31 | 1993-12-07 | At&T Bell Laboratories | Intelligent self-diagnosing and sparing light emitting diodes |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59229369A (en) * | 1983-06-07 | 1984-12-22 | Rohm Co Ltd | Thermal printing head |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5270486A (en) * | 1975-12-10 | 1977-06-11 | Raisaburou Jitsui | Safety device for machine tool |
-
1977
- 1977-07-04 JP JP52080212A patent/JPS5829440B2/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5270486A (en) * | 1975-12-10 | 1977-06-11 | Raisaburou Jitsui | Safety device for machine tool |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56501293A (en) * | 1979-09-10 | 1981-09-10 | ||
JPS5961226A (en) * | 1982-09-30 | 1984-04-07 | Anritsu Corp | Device for discriminating fault of optical switch |
JPH0311577B2 (en) * | 1982-09-30 | 1991-02-18 | Anritsu Corp | |
JPS6068725U (en) * | 1983-10-18 | 1985-05-15 | 株式会社山武 | photoelectric switch |
JPS6431294U (en) * | 1987-08-19 | 1989-02-27 | ||
JPH0544637Y2 (en) * | 1987-08-19 | 1993-11-12 | ||
JPS6464902A (en) * | 1987-09-03 | 1989-03-10 | Riken Optical Kk | Optical malfunction detecting circuit and system check device therefor in garbage collection vehicle |
US5268635A (en) * | 1992-07-31 | 1993-12-07 | At&T Bell Laboratories | Intelligent self-diagnosing and sparing light emitting diodes |
Also Published As
Publication number | Publication date |
---|---|
JPS5829440B2 (en) | 1983-06-22 |
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